NASA’s Hubble Space Telescope has achieved a remarkable milestone by completing its 200,000th orbit around Earth on September 19. Launched in April 1990, Hubble has traveled over 5 billion miles and made more than 1.7 million observations during its ongoing mission, originally intended to last 15 years.
Currently, Hubble is focusing on the galaxy cluster MACS J0417, seeking the reappearance of the supernova known as Athena. The cluster acts as a gravitational lens, magnifying the light of distant objects. By tracking this supernova, scientists hope to gain insights into the universe’s expansion rate.
Hubble orbits at about 300 miles above Earth, traveling roughly 17,000 mph, completing a lap about every 95 minutes. Its position allows for clearer observations, free from atmospheric distortion, and enables the study of ultraviolet, visible, and near-infrared light.
Despite its age, Hubble continues to be scientifically productive. With no planned servicing missions since 2009, NASA anticipates it will remain operational into the next decade, with a controlled disposal planned for the mid-2030s. Hubble’s continuous observations promise to enhance our understanding of the cosmos in the years to come.
